Color photographic recording material

ABSTRACT

A colour photographic recording material which contains on a support at least one blue-sensitive silver halide emulsion layer, which is associated with a yellow coupler, at least one green-sensitive silver halide emulsion layer, which is associated with a magenta coupler, and at least one red-sensitive silver halide emulsion layer, which is associated with a cyan coupler, together with non-photosensitive interlayers between the layers of different colour sensitivity, characterised in that at least one green-sensitive silver halide emulsion layer contains a pyrazolotriazole coupler as the magenta coupler and at least one interlayer adjacent to this layer contains a compound of the formula I as the DOP scavenger ##STR1## in which R 1  means alkyl, aryl, acyl or alkenyl, 
     R 2  means hydrogen or R 1   
     and in which R 1  and R 2  may also form a ring consisting of 5 or 6 atoms, wherein a ring consisting of 6 atoms is not aromatic, 
     or a compound of the formula II ##STR2## in which R 3  means alkyl, aryl or alkenyl, 
     R 4  means hydrogen or R 3   
     and in which R 3  and R 4  may also form a ring consisting of 5 to 8 atoms, wherein R 3  and R 4  together have at least 12 C atoms, 
     is distinguished by improved stability to the action of light.

This invention relates to a colour photographic recording material whichcontains a pyrazolotriazole coupler in a photosensitive silver halideemulsion layer and a novel developer oxidation product (DOP) scavengerin a non-photosensitive layer adjacent thereto.

It is known to produce coloured photographic images by chromogenicdevelopment, i.e., by developing silver halide emulsion layers exposedwith an image by means of suitable chromogenic developer substances,so-called colour developers, in the presence of suitable coupler,wherein the oxidation product of the developer substance, whichoxidation product is produced congruently with the silver image, reactswith the colour coupler to form a dye image. Aromatic compoundscontaining primary amino groups, in particular those ofp-phenylenediamine type, are normally used as colour developers.

Pyrazolone couplers are conventionally used to produce magenta dyeimages. The absorption characteristics of the image dyes obtained fromthese pyrazolone couplers are in many ways not ideal. Particularlydisruptive is the yellow secondary density which makes it necessary touse masking couplers or other masking techniques in order to obtainbright colours in the photographic image. It proved possible to achievea certain improvement in this respect by using 3-anilinopyrazolonecouplers. However, colour reproduction still leaves something to bedesired.

Pyrazoles condensed with 5-membered heterocyclic compounds, so-calledpyrazoloazoles, may also be used as magenta couplers. Their advantageover simple pyrazoles is that they yield colours having greater formalinresistance and purer absorption spectra (EP-A-178 789).

One major problem associated with the use of the frequently usedpyrazolotriazole magenta couplers is the low stability of the image dyesobtained to the action of light.

Investigations which have now been performed confirm that this effect isin part caused by the DOP scavengers conventionally used in thenon-photosensitive interlayers of a colour photographic material. Thesecompounds are preferably either hydroquinone compounds substituted by 2long-chain or bulky alkyl groups or by a hydrophobising acylaminoresidue or disulphoneamidophenols (EP-A-560 198).

The object underlying the invention is to improve the stability of acolour photographic recording material which contains a pyrazolotriazolemagenta coupler.

It has now been found that the above-stated object is achieved with acolour photographic recording material according to claim 1.

The present invention accordingly provides a colour photographicrecording material which contains on a support at least oneblue-sensitive silver halide emulsion layer, which is associated with ayellow coupler, at least one green-sensitive silver halide emulsionlayer, which is associated with a magenta coupler, and at least onered-sensitive silver halide emulsion layer, which is associated with acyan coupler, together with non-photosensitive interlayers between thelayers of different colour sensitivity, characterised in that at leastone green-sensitive silver halide emulsion layer contains apyrazolotriazole coupler as the magenta coupler and at least oneinterlayer adjacent to this layer contains a compound of the formula Ias the DOP scavenger ##STR3## in which R₁ means alkyl, aryl, acyl oralkenyl,

R₂ means hydrogen or R₁

and in which R₁ and R₂ may also form a ring consisting of 5 or 6 atoms,wherein a ring consisting of 6 atoms is not aromatic,

or a compound of the formula II ##STR4## in which R₃ means alkyl, arylor alkenyl,

R₄ means hydrogen or R₃

and in which R₃ and R₄ may also form a ring consisting of 5 to 8 atoms,wherein R₃ and R₄ together have at least 12 C atoms.

In a preferred embodiment of the invention, the DOP scavenger of theformula I is of the formula III ##STR5## in which X₁, X₂ mean --O-- or--NR₇ --

R₅, R₆ mean hydrogen or acyl and

R₇ means hydrogen, alkyl or acyl.

In a particularly preferred embodiment of the invention

X₁, X₂ mean --O--,

R₅ means hydrogen and

R₆ means acyl

in the formula III.

An alkyl or alkenyl residue represented by R₁, R₂, R₃, R₄ or R₇ orcontained therein may be linear, branched or cyclic.

A residue represented by R₁ to R₇ or contained therein may in turnitself be substituted: possible substituents are halogen, hydroxy,alkyl, alkenyl, alkynyl, aryl, acyl, alkoxy, aryloxy, acyloxy,alkylthio, arylthio or acylamino. An acyl residue may be derived from analiphatic or aromatic carboxylic or sulphonic acid, from carbonic acid,carbamic acid or amidosulphuric acid, a sulphinic, phosphonic orphosphoric acid.

Examples of suitable DOP scavengers of the formulae I and III are statedbelow. ##STR6##

Examples of suitable DOP scavengers of the formula II are stated below.

    ______________________________________                                                                       (II)                                            ##STR7##                                                                     Nr.  R.sub.3                    R.sub.4                                       ______________________________________                                        II-1 --C.sub.18 H.sub.37        H                                             II-2 --CH.sub.2 --CH(CH.sub.3)--CO.sub.2 --C.sub.8 H.sub.17                                                   H                                             II-3 --CH.sub.2 --CH.sub.2 --CO--NH--C.sub.12 H.sub.25                                                        H                                             II-4 --C.sub.7 H.sub.15         R.sub.3                                       II-5 --C.sub.12 H.sub.25        R.sub.3                                       II-6                                                                                ##STR8##                  R.sub.3                                       II-7 --CH.sub.2 --CH.sub.2 --CO.sub.2 --CH.sub.2 --CH(C.sub.2 H.sub.5)C.su         b.4 H.sub.9                R.sub.3                                       II-8 --CH.sub.2 --CH(CH.sub.3)--CO--NH--C.sub.4 H.sub.9 -t                                                    R.sub.3                                       II-9                                                                                ##STR9##                  R.sub.3                                       II-10                                                                               ##STR10##                 R.sub.3                                       II-11                                                                               ##STR11##                 R.sub.3                                       II-12                                                                               ##STR12##                 R.sub.3                                       II-13                                                                               ##STR13##                 R.sub.3                                       II-14                                                                              --C.sub.18 H.sub.37        --CH.sub.3                                    II-15                                                                              --C.sub.12 H.sub.25        --C.sub.2 H.sub.5                             II-16                                                                              --CH.sub.2 --CH.sub.2 --CO.sub.2 --CH.sub.2 --CH(C.sub.2 H.sub.5)C.su         b.4 H.sub.9                --C.sub.3 H.sub.7 -i                          II-17                                                                               ##STR14##                                                               II-18                                                                               ##STR15##                                                               II-19                                                                               ##STR16##                                                               II-20                                                                               ##STR17##                                                               II-21                                                                               ##STR18##                                                               ______________________________________                                    

The DOP scavengers of the formulae I to III are conventionally used inthe colour photographic material in a quantity of 10 to 500 mg/m² perinterlayer. Preferably, 30 to 300 mg/m² are used.

The pyrazolotriazole magenta couplers are conventionally used in a totalquantity of 50 to 800 mg/m², in particular of 100 to 400 mg/m².

Preferred pyrazolotriazole couplers are those of the formula IV##STR19## in which R₈ means hydrogen, halogen, alkyl, aryl, aheterocyclic group, cyano, alkoxy, acyloxy, carbamoyloxy, acylamino or apolymer residue,

Y means hydrogen or a group eliminable under chromogenic developmentconditions,

one of the residues Z₁ and Z₂ means a nitrogen atom and the other means--CR₉ -- and

R₉ has the same meaning as R₈, wherein one of the residues R₈ and R₉ isa ballast group or is substituted by a ballast residue, wherein theballast group may also be a polymer residue.

In a preferred embodiment,

Y means hydrogen, chlorine, alkyl, aryl, acyl or ##STR20##

In an another preferred embodiment, R₈ and R₉ together have at least 15C atoms.

Examples of suitable pyrazolotriazole couplers of the formula IV arestated below. ##STR21##

Use of the compounds of the formulae I to IV in photographic materialsis known.

U.S. Pat. No. 2,728,661 describes the use of ascorbic acid esters toimprove whiteness stability in photosensitive and non-photosensitivelayers of a photographic material which does not contain apyrazolotriazole magenta coupler.

Photographic materials containing pyrazolotriazole magenta couplers andenediols of the formulae I and III (EP-A-512 496, U.S. Pat. No.5,429,916) or hydroxylamines of the formula II (JP-A-63/85 548) togetherin a photosensitive silver halide emulsion layer are prior art.

It is, however, completely surprising and not to be learnt from thesepublications, that using these compounds as DOP scavengers in aninterlayer which is adjacent to a green-sensitive silver halide emulsionlayer containing a pyrazolotriazole magenta coupler while simultaneouslydispensing with the hydroquinones hitherto used for this purpose shouldresult in the above-stated advantages.

Examples of colour photographic materials are colour negative films,colour reversal films, colour positive films, colour photographic paper,colour reversal photographic paper, colour-sensitive materials for thedye diffusion transfer process or the silver dye bleaching process.

The photographic materials consist of a support onto which at least onephotosensitive silver halide emulsion layer is applied. Thin films andsheets are in particular suitable as supports. A review of supportmaterials and the auxiliary layers applied to the front and reversesides of which is given in Research Disclosure 37254, part 1 (1995),page 285.

The material according to the invention preferably has a reflectivesupport.

The colour photographic materials conventionally contain at least onered-sensitive, one green-sensitive and one blue-sensitive silver halideemulsion layer, optionally together with interlayers and protectivelayers.

Depending upon the type of the photographic material, these layers maybe differently arranged. This is demonstrated for the most importantproducts:

Colour photographic films such as colour negative films and colourreversal films have on the support, in the stated sequence, 2 or 3red-sensitive, cyan-coupling silver halide emulsion layers, 2 or 3green-sensitive, magenta-coupling silver halide emulsion layers and 2 or3 blue-sensitive, yellow-coupling silver halide emulsion layers. Thelayers of identical spectral sensitivity differ with regard to theirphotographic sensitivity, wherein the less sensitive partial layers aregenerally arranged closer to the support than the more highly sensitivepartial layers.

Possible options for different layer arrangements and the effectsthereof on photographic properties are described in J. Inf. Rec. Mats.,1994, volume 22, pages 183-193.

Colour photographic paper, which is usually substantially lessphotosensitive than a colour photographic film, conventionally has onthe support, in the stated sequence, one blue-sensitive, yellow-couplingsilver halide emulsion layer, one green-sensitive, magenta-couplingsilver halide emulsion layer and one red-sensitive, cyan-coupling silverhalide emulsion layer.

The number and arrangement of the photosensitive layers may be varied inorder to achieve specific results. For example, all high sensitivitylayers may be grouped together in one package of layers and all lowsensitivity layers may be grouped together in another package of layersin order to increase sensitivity (DE-25 30 645).

The substantial constituents of the photographic emulsion layers arebinder, silver halide grains and colour couplers.

Details of suitable binders may be found in Research Disclosure 37254,part 2 (1995), page 286.

Details of suitable silver halide emulsions, the production, ripening,stabilisation and spectral sensitisation thereof, including suitablespectral sensitisers, may be found in Research Disclosure 37254, part 3(1995), page 286 and in Research Disclosure 37038, part XV (1995), page89.

Photographic materials with camera sensitivity conventionally containsilver bromide-iodide emulsions, which may optionally also contain smallproportions of silver chloride. Photographic print materials containeither silver chloride-bromide emulsions with up to 80 wt. % of AgBr orsilver chloride-bromide emulsions with above 95 mol. % of AgCl.

Details relating to colour couplers may be found in Research Disclosure37254, part 4 (1995), page 288 and in Research Disclosure 37038, part II(1995), page 80. The maximum absorption of the dyes formed from thecouplers and the developer oxidation product is preferably within thefollowing ranges: yellow coupler 430 to 460 nm, magenta coupler 540 to560 nm, cyan coupler 630 to 700 nm.

In order to improve sensitivity, grain, sharpness and colour separationin colour photographic films, compounds are frequently used which, onreaction with the developer oxidation product, release photographicallyactive compounds, for example DIR couplers which eliminate a developmentinhibitor.

Details relating to such compounds, in particular couplers, may be foundin Research Disclosure 37254, part 5 (1995), page 290 and in ResearchDisclosure 37038, part XIV (1995), page 86.

Colour couplers, which are usually hydrophobic, as well as otherhydrophobic constituents of the layers, are conventionally dissolved ordispersed in high-boiling organic solvents. These solutions ordispersions are then emulsified into an aqueous binder solution(conventionally a gelatine solution) and, once the layers have dried,are present as fine droplets (0.05 to 0.8 μm in diameter) in the layers.

Suitable high-boiling organic solvents, methods for the introductionthereof into the layers of a photographic material and further methodsfor introducing chemical compounds into photographic layers may be foundin Research Disclosure 37254, part 6 (1995), page 292.

The non-photosensitive interlayers generally located between layers ofdifferent spectral sensitivity may contain agents which prevent anundesirable diffusion of developer oxidation products from onephotosensitive layer into another photosensitive layer with a differentspectral sensitisation.

Suitable compounds (white couplers, scavengers or DOP scavengers) may befound in Research Disclosure 37254, part 7 (1995), page 292 and inResearch Disclosure 37038, part III (1995), page 84.

The photographic material may also contain UV light absorbing compounds,optical whiteners, spacers, filter dyes, formalin scavengers, lightstabilisers, antioxidants, D_(min) dyes, additives to improvestabilisation of dyes, couplers and whites and to reduce colour fogging,plasticisers (latices), biocides and others.

Suitable compounds may be found in Research Disclosure 37254, part 8(1995), page 292 and in Research Disclosure 37038, parts IV, V, VI, VII,X, XI and XIII (1995), pages 84 et seq.

The layers of colour photographic materials are conventionally hardened,i.e. the binder used, preferably gelatine, is crosslinked by appropriatechemical methods.

Suitable hardener substances may be found in Research Disclosure 37254,part 9 (1995), page 294 and in Research Disclosure 37038, part XII(1995), page 86.

Once exposed with an image, colour photographic materials are processedusing different processes depending upon their nature. Details relatingto processing methods and the necessary chemicals are disclosed inResearch Disclosure 37254, part 10 (1995), page 294 and in ResearchDisclosure 37038, parts XVI to XXIII (1995), pages 95 et seq. togetherwith example materials.

EXAMPLE 1

A colour photographic recording material was produced by applying thefollowing layers in the stated sequence onto a film support made ofpaper coated on both sides with polyethylene. All quantities are statedper 1 m². The quantity of silver halide applied is stated as thecorresponding quantity of AgNO₃.

    ______________________________________                                        Layer structure 1                                                             ______________________________________                                        Layer 1:                                                                             (Substrate layer)                                                             0.2 g of gelatine                                                      Layer 2:                                                                             (Blue-sensitive layer)                                                        Blue-sensitive silver halide emulsion (99.5 mol. % chloride,                  0.5 mol. % bromide, average grain diameter 0.8 μm) prepared                from                                                                          0.45 g of AgNO.sub.3 with                                                     1.18 g of gelatine                                                            0.55 g of yellow coupler Y-1                                                  0.1 g of white coupler W-1                                                    0.2 g of dye stabiliser ST-1                                                  0.29 g of oil former OF-1                                                     0.10 g of oil former OF-2                                              Layer 3:                                                                             (Protective layer)                                                            1.10 g of gelatine                                                            0.14 g of compound SC-1                                                       0.07 g of tricresyl phosphate (TCP)                                    Layer 4:                                                                             (Green-sensitive layer)                                                       Green-sensitised silver halide emulsion (99.5 mol. % chloride,                0.5 mol. % bromide, average grain diameter 0.6 μm) prepared                from                                                                          0.30 g of AgNO.sub.3 with                                                     1.08 g of gelatine                                                            0.28 g of magenta coupler M-17                                                0.24 g of dye stabiliser ST-2                                                 0.10 g of dye stabiliser ST-3                                                 0.25 g of dibutyl adipate                                                     0.25 g of isooctadecanol                                               Layer 5:                                                                             (UV protective layer)                                                         1.15 g of gelatine                                                            0.2 g of UV absorber UV-1                                                     0.2 g of UV absorber UV-2                                                     0.2 g of oil former OF-3                                                      0.14 g of compound SC-1                                                       0.04 g of TCP                                                          Layer 6:                                                                             (Red-sensitive layer)                                                         Red-sensitised silver halide emulsion (99.5 mol. % chloride,                  0.5 mol. % bromide, average grain diameter 0.5 μm) prepared                from                                                                          0.30 g of AgNO.sub.3 with                                                     0.75 g of gelatine                                                            0.2 g of UV absorber UV-1                                                     0.36 g of cyan coupler C-1                                                    0.12 g of dye stabiliser ST-4                                                 0.24 g of TCP                                                          Layer 7:                                                                             (UV protective layer)                                                         0.35 g of gelatine                                                            0.15 g of UV absorber UV-3                                                    0.15 g of oil former OF-4                                              Layer 8:                                                                             (Protective layer)                                                            0.9 g of gelatine                                                             0.3 g of hardener H-1                                                  ______________________________________                                    

The following compounds were used in the layer structure of Example 1:##STR22## Layer Structures 2 to 11

In layer structures 2 to 11, compound SC-1 in layers 3 and 5 wasreplaced by the compounds stated in Table 1. As for SC-1, the quantityused in each case was 0.14 g/m². Moreover, in layer 4 of layerstructures 9 to 11, the magenta coupler M-17 was replaced by 0.18 g/m²of M-9 and dye stabilisers ST-2 and ST-3 were replaced by 0.6 g/m² ofST-5.

Layer Structures 12 and 13

Layer structures 12 and 13 are also identical to layer structure 1, withthe exception that 0.14 g/m² of III-1 was added to layer 4. In structure13, compound SC-1 in layers 3 and 5 was additionally omitted.

The specimens were exposed with green light through a graduated greywedge and then processed as follows:

    ______________________________________                                        a)     Colour developer - 45 s - 35° C.                                       Tetraethylene glycol      20.0 g                                              N,N-diethylhydroxylamine  4.0 g                                               (N-ethyl-N-(2-methanesulphonamido)ethyl))-4-                                                            5.0 g                                               amino-3-methylbenzene sulphate                                                Potassium sulphite        0.2 g                                               Potassium carbonate       30.0 g                                              Polymaleic anhydride      2.5 g                                               Hydroxyethanediphosphonic acid                                                                          0.2 g                                               Optical whitener (4,4'-diaminostilbene sulphonic                                                        2.0 g                                               acid derivative)                                                              Potassium bromide         0.02 g                                              make up with water to 1000 ml; adjust pH value to pH =                        10.2 with KOH or H.sub.2 SO.sub.4.                                     b)     Bleach/fixing bath - 45 s - 35° C.                                     Ammonium thiosulphate     75.0 g                                              Sodium hydrogen sulphite  13.5 g                                              Ethylenediaminetetraacetic acid (iron-ammonium                                                          45.0 g                                              salt)                                                                         make up with water to 1000 ml; adjust pH value to pH 6.0                      with ammonia (25%) or acetic acid.                                     c)     Rinsing - 2 min - 33° C.                                        d)     Drying                                                                 ______________________________________                                    

Cyan density (D_(cyan)) at magenta density (D_(magenta)) 1.0 and magentafog (D_(min) (magenta)) were then measured (Table 1). The specimens werethen exposed to the light from a daylight-standardised xenon lamp andirradiated with 15-10⁶ l×h. The percentage reduction in densityΔD_(magenta) after irradiation was determined at initial densityD_(magenta) =1.0

                  TABLE 1                                                         ______________________________________                                        Layer                                                                              DOP scavenger                                                                            D.sub.min                                                                             D.sub.cyan at                                         struc-                                                                             in layers  (ma-    D.sub.magenta =                                                                      ΔD.sub.magenta in                        ture 3 and 5    genta)  1.0    %                                              ______________________________________                                        1    SC-1       0.08    0.118  -33     Comparison                             2    --         0.09    0.152  -26     Comparison                             3    SC-2       0.08    0.109  -40     Comparison                             4    SC-3       0.08    0.123  -28     Comparison                             5    III-1      0.08    0.104  -24     Invention                              6    III-3      0.08    0.105  -24     Invention                              7    I-1        0.08    0.110  -27     Invention                              8    I-4        0.08    0.108  -25     Invention                              9    SC-2       0.07    0.089  -27     Comparison                             10   III-1      0.07    0.086  -15     Invention                              11   III-6      0.07    0.088  -14     Invention                              12   SC-1       0.23    0.115  -36     Comparison                             13   --         0.25    0.149  -35     Comparison                             ______________________________________                                    

As may be seen, the specimens according to the invention exhibit thegreatest possible magenta dye stability and only very slight co-couplingof the red-sensitive layer.

Table 1 moreover demonstrates that adding the compound III-1 accordingto the invention to the green-sensitive silver halide emulsion layer(layer structures 12 and 13, prior art according to U.S. Pat. No.5,429,916), neither effectively prevents co-coupling nor improvesmagenta dye stability. There is, moreover, an appreciable rise inmagenta fog.

EXAMPLE 2

A colour photographic recording material was produced by applying thefollowing layers in the stated sequence onto a film support made ofpaper coated on both sides with polyethylene. All quantities are statedper 1 m². The quantity of silver halide applied is stated as thecorresponding quantity of AgNO₃.

    ______________________________________                                        Layer structure 14                                                            ______________________________________                                        Layer 1:                                                                             as layer structure 1                                                   Layer 2:                                                                             (Blue-sensitive layer)                                                        Blue-sensitive silver halide emulsion (99.5 mol. % chloride,                  0.5 mol. % bromide, average grain diameter 0.8 μm)                         prepared from                                                                 0.45 g of AgNO.sub.3 with                                                     1.18 g of gelatine                                                            0.55 g of yellow coupler Y-2                                                  0.1 g of white coupler W-1                                                    0.2 g of dye stabiliser ST-1                                                  0.29 g of oil former OF-5                                                     0.10 g of oil former OF-2                                              Layer 3:                                                                             as layer structure 1                                                   Layer 4:                                                                             (Green-sensitive layer)                                                       Green-sensitised silver halide emulsion (99.5 mol. %                          chloride,                                                                     0.5 mol. % bromide, average grain diameter 0.6 μm)                         prepared from                                                                 0.30 g of AgNO.sub.3 with                                                     1.08 g of gelatine                                                            0.28 g of magenta coupler M-16                                                0.24 g of dye stabiliser ST-2                                                 0.10 g of dye stabiliser ST-6                                                 0.50 g of diisooctyl phthalate                                         Layer 5:                                                                             as layer structure 1                                                   Layer 6:                                                                             (Red-sensitive layer)                                                         Red-sensitised silver halide emulsion (99.5 mol. %                            chloride,                                                                     0.5 mol. % bromide, average grain diameter 0.5 μm)                         prepared from                                                                 0.30 g of AgNO.sub.3 with                                                     0.75 g of gelatine                                                            0.2 g of UV absorber UV-1                                                     0.36 g of cyan coupler C-2                                                    0.12 g of dye stabiliser ST-4                                                 0.24 g of TCP                                                          Layer 7:                                                                             (UV protective layer)                                                         0.35 g of gelatine                                                            0.15 g of UV absorber UV-4                                                    0.15 g of oil former OF-4                                              Layer 8:                                                                             as layer structure 1                                                   ______________________________________                                    

The following new compounds were used in the layer structure of Example2: ##STR23## OF-5 Adipic acid polyester with 1,3-butanediol and1,6-hexanediol C-1 1:1 mixture of ##STR24## Layer Structures 15 to 24

In layer structures 15 to 24, compound SC-1 in layers 3 and 5 wasreplaced by the compounds stated in Table 2. As for SC-1, the quantityused in each case was 0.14 g/m². Moreover, in layer 4 of layerstructures 22 to 24, the magenta coupler M-16 was replaced by 0.18 g/m²of M-9 and dye stabilisers ST-2 and ST-6 were replaced by 0.6 g/m² ofST-5.

Layer Structures 25 to 27

Layer structures 25 to 27 are also identical to layer structure 14, withthe exception that 0.14 g/m² of II-5 (structures 25 and 26) or II-6(structure 27) was added to layer 4. In structures 26 and 27, compoundSC-1 in layers 3 and 5 was additionally omitted.

The specimens were exposed with green light through a graduated greywedge and then processed as in Example 1.

Cyan density (D_(cyan)) at magenta density (D_(magenta)) 1.0 and magentafog (D_(min) (magenta)) were then measured (Table 2). The specimens werethen exposed to the light from a daylight-standardised xenon lamp andirradiated with 20-10⁶ l×h. The percentage reduction in densityΔD_(magenta) after irradiation was determined at initial densityD_(magenta)

                  TABLE 2                                                         ______________________________________                                        Layer                                                                              DOP scavenger                                                                            D.sub.min                                                                             D.sub.cyan at                                         struc-                                                                             in layers  (ma-    D.sub.magenta =                                                                      ΔD.sub.magenta in                        ture 3 and 5    genta)  1.0    %                                              ______________________________________                                        14   SC-1       0.08    0.121  -40     Comparison                             15   --         0.09    0.158  -32     Comparison                             16   SC-2       0.08    0.112  -47     Comparison                             17   SC-3       0.08    0.126  -33     Comparison                             18   II-2       0.08    0.110  -31     Invention                              19   II-6       0.08    0.113  -32     Invention                              20   II-7       0.08    0.111  -31     Invention                              21   II-17      0.08    0.111  -33     Invention                              22   SC-2       0.07    0.091  -32     Comparison                             23   II-16      0.07    0.090  -20     Invention                              24   II-20      0.07    0.092  -21     Invention                              25   SC-1       0.27    0.123  -45     Comparison                             26   --         0.29    0.154  -44     Comparison                             27   --         0.28    0.150  -47     Comparison                             ______________________________________                                    

As may be seen, the specimens according to the invention exhibit thegreatest possible magenta dye stability and only very slight co-couplingof the red-sensitive layer.

Table 2 moreover demonstrates that adding the compounds II-5 or II-6according to the invention to the green-sensitive silver halide emulsionlayer (layer structures 25 to 27, prior art according to JP-A-63/85548), neither effectively prevents co-coupling nor improves magenta dyestability. There is, moreover, an appreciable rise in magenta fog.

I claim:
 1. A color photographic recording material which comprises on asupport at least one blue-sensitive silver halide emulsion layer, whichis associated with a yellow coupler, at least one green-sensitive silverhalide emulsion layer, which is associated with a magenta coupler, andat least one red-sensitive silver halide emulsion layer, which isassociated with a cyan coupler, together with non-photosensitiveinterlayers between the layers of different color sensitivity, whereinat least one green-sensitive silver halide emulsion layer contains apyrazolotriazole coupler as the magenta coupler and at least oneinterlayer adjacent to this layer contains a compound of the formula II##STR25## in which R₃ is alkyl, aryl or alkenyl,R₄ is hydrogen, alkyl,aryl or alkenyl, and wherein R₃ and R₄ together have at least 12 C atomsor R₃ and R₄ form a ring consisting of 5 to 8 atoms.
 2. The colorphotographic recording material according to claim 1, wherein thepyrazolotriazole coupler is of the formula IV ##STR26## in which R₈ ishydrogen, halogen, alkyl, aryl, a heterocyclic group, cyano, alkoxy,acyloxy, carbamoyloxy, acylamino or a polymer residue,Y is hydrogen or agroup eliminable under chromogenic development conditions, one of theresidues Z₁ and Z₂ is a nitrogen atom and the other is --CR₉ --and R₉has the same meaning as R₈, wherein one of the residues R₈ and R₉ is aballast group or is substituted by a ballast residue, wherein theballast group optionally is a polymer residue.
 3. The color photographicrecording material according to claim 1, wherein the pyrazolotriazolecoupler is used in the photographic material in a quantity of 50 to 800mg/m² per interlayer.
 4. The color photographic recording materialaccording to claim 1, wherein R₃ and R₄ are identical.
 5. The colorphotographic recording material according to claim 1, wherein thecompound of the formula II is used in the photographic material in aquantity of 10 to 500 mg/m² per interlayer.
 6. The color photographicrecording material according to claim 2, wherein the pyrazolotriazolecoupler is used in the photographic material in a quantity of 50 to 800mg/m².
 7. The color photographic recording material according to claim2, wherein Y is hydrogen, chlorine, alkyl, aryl, acyl or ##STR27## 8.The color photographic recording material according to claim 2, whereinthe pyrazolotriazole coupler of formula VI is selected from the groupconsisting of
 9. The color photographic recording material according toclaim 3, wherein the compound of formula II is used in the photographicmaterial in a quantity of 30 to 300 mg/m² per interlayer.
 10. The colorphotographic recording material according to claim 6, wherein thepyrazolotriazole coupler is used in the photographic material in aquantity of 100 to 400 mg/m².
 11. The color photographic recordingmaterial according to claim 10, wherein R₈ and R₉ together have at least15 carbon atoms.